Lister plow



Jan. 29, 1929.

' J. v. BROOKS LISTER PLOW Original Filed April 16, 1927 2 Shuts-SheetINVENTOR. J. K Brae/6,

ATTORNEYS.

Jan. 29, 1929. 1,700,348

. J. v. BROOKS LISTER PLOW Original Filed April 16, 1927 2 Sheets-Sheet2 IN VEN TOR.

' IKE/00f BY I GTWTTORNEYS. J

Patented Jan. 29, 1929.

UNITED. STATES PATENT OFFICE.

JEREMIAH v. BROOKS, E LIBERAL, xenszrsnssmnoa or ONE-FOURTH T0 JOHN A.HULL, or PERTH, KANSAS.

LISTER rLow.

Application filed April 16, 1927, Serial No. 184,262. Renewed December3, 1928.

This invention relates to lister plows.

The object of my invention is the construction of a simple and efficientlister plow, whereby a field may be more easily and satisfactorilycultivated. I

Another object of the invention is the construction of a lister plowhaving a mold board that is reinforced and greatly strengthened by aneiiicient frog, and to which mold board and frog simple and efficientcutters may be attached.

With the foregoing and other ob ects in View, my invention comprisescertain novel constructions, combinations and arrange- 1 ments of partsas will be hereinafter fully described, illustrated in the accompanyingdrawings, and more particularly pointed out in the appended claims.

In the drawings: I Figure 1 is a perspective View of a lister plowconstructed in accordance with the present invention,while Figure 2 is arear view of the same.

Figure 3 is a vertical central sectional View of the frog.

Figure 4 is a sectional View taken on line 4-4, Figure 2 and looking inthe direction of the arrows.

Figure 5 is a perspective View of the frog.

Figure 6 is a perspective view of one of the cutters.

Figure 7 is a sectional View taken on line 77, Figure 2, and looking inthe direction of the arrows.

Referring to the drawings by numerals, 1 designates a mold board, whichis substantially V-shaped in cross section (Fig. 4), and the mold boardis provided, at its lower end, with a point structure 2, which cuts orshears the sod or earth.

The frog 3 of my lister plow comprises an elongated body 4, curvedtoconform to the mold board 1, and the body of the frog is substantiallyV-shaped in cross section, as shown in Figure 4. Extending laterallyfrom the upper end of body 4 are upper flanges, 5, 5. Extendinglaterally from the lower portion of the body 4 are elongated lowerflanges 6, 6.

In the upper flanges 5 are apertures 7 and in the lower flanges 6 areapertures 8 and 9. Extending rearwardly from the upper end of the body 4of the frog 3 are a pair of parallel ears 10.

Each car 10 is provided with an upper. horizontal curved slot 11, andwith a vertical elongated slot 12. The plow beam is positioned betweenthe ears 10 and bolt 14 (dotted lines Fig. 2) extends through thev lowerend of said plow beam and the registering slots 12; bolt 15 (dottedlines Fig. 2) also extends through plow beam 13 and the registeringslots 11. By reason of these peculiarly formed and positioned slots 11and 12, the plow beam 13 can be adjusted to a nicety upon the mold board1, so that the proper pitch, for cutting and plowing purposes oan beobtained withmy lister plow.

At the lower bend A (Fig. 3) of the frog, where the greatest strainoccurs, I form a reinforcing rib 16 which greatly strengthens the entirestructure and thereby increases its life.

Bolts 17 extend through the mold board 1 and apertures 7 fasteningsecurely the upper end of the frog to the mold board. Suitable fasteningmeans such as rivets 18 extend through the apertures 8 and 9 and themoldboard, thereby securely fastening the lower end of the frog to said moldboard 1.

The laterally extending elongated flanges 6 are provided on their inneror upper faces with cutter receiving sockets 19; the apertures 9 openingat their upper ends upon these sockets. The angle cutters 20 eachcomprises a base 21 and a vertically extending portion 22. The base 21is positioned between the mold board 1 and the body 4 of frog 3, withthe aperture 23, of base 21 registering with aperture 9, and a rivet 18(Fig. 7 extends through the mold board 1 and these registering apertures9 and 23, securely fastening the cutter in place. These cutters preventthe lister sliding sidewise, and they also lightening the draft andreduce the wear of the outer side of the lower part or shear and themold board.

The drawings show the mold board and its lower structure 2 to be curvedgradually so as to produce an excellent plowing point, whereby the earthis lifted and passed up over the mold board without undue strain or loadbeing placed upon the draft animals. The frog extends substantially theentire length of the inner face of the mold board and its lower pointedstructure, whereby the entire mold board is greatly reinforced andstrengthened, while at the same time a very efficient means is furnishedfor connecting the plow beam 13 to the mold board. Further, by thespecial curvature of the upper and outer portion of the mold board,

as shown in the drawings, the dirtis broken,

pulverized and thrust clear of the furrow.

To make the cutters 20 easily attachable,

or detachable, the bolts 17 may be substituted ,for the rivets 18 (Fig.7), whereby the cutters 20 can be placed on or taken off my plow as theoperator desires.

A pair of rivets 2-4: is placed at each side of the longitudinallyextending rib 16, these rivets extending through apertures 25 (Fig. 5)in the body of the frog. This further strengthens the point of greatestwear upon my lister plow, because the parts are tightly connected at thebend A, hereinbefore referred to, which bend is also found in the moldboard 1' and the lower part or shear portion 2.

WVhile I have described the preferred embodiment of my invention: andillustrated the same in the accompanying drawings, certain minor changesor alterations may appear to one skilled in the art to which thisinvention relates during the extensive manufacture of the same, and I,therefore, reserve the right to make such alterations or changes orshall fairly fall within the scope of the appended claims.

What I claim is: A

1. In a lister plow the-combination with a mold board, of a frogprovided with lower flanges, said flanges provided on their inner facewith cutter receiving sockets, angle cutters between said mold board andfrog and seated in said cutter receiving sockets, means extending,through the mold board, cutters and frog for fastening the sametogether, and means formed on said frog for attaching a plow beamthereto.

2. In a lister plow, the combination with a mold board, of an elongated:frog fastened against the inner face of said mold board, said elongatedfrog having receiving sockets in its lower portion and at its outeredges, cutters provided with horizontal bases extending into saidsockets, fastening means extending through the mold board, frog and saidbases fastening all together, and said cutters also provided withvertically extending portions projecting upwardly above the side edgesof said mold board.

3. In a lister plow, the combinationwith a mold board, of a frogprovided at its side edges with lower elongated flanges, said flangesprovided on their upper faces with cutter receiving sockets opening onthe edges of said flanges, angle cutters seated down in said cutterreceiving sockets between the frog and the mold board, and means fasten-JEREMIAH V. BROOKS.

